Sometimes I can't get my penis hard when I'm with

Patient

Q:Sometimes I can't get my penis hard when I'm with my girlfriend. She is very attractive and so I'm I. It doesn't happen every time we get ready to have sex, but when it does I am embarrassed. I am only 36 years old and have been sexually active since I was 18 years old, I have been experiencing this problem for the past 12 months or so. What can I do about this problem?

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